Journal of Electrical Engineering and Automation

Aging urban gas pipelines suffer from leakage, corrosion, and structural damage due to prolonged operation, directly impacting public safety and energy efficiency. While traditional trench excavation methods can completely replace pipelines, they are characterized by lengthy construction periods, high costs, and significant traffic disruption. Non-trench repair technology has emerged as a preferred solution for pipeline renewal due to its advantages of short construction duration, minimal land occupation, and low environmental impact on municipal infrastructure. This paper compares direct costs, indirect losses, and long-term benefits between the two approaches, demonstrating that non-trench repair offers notable economic advantages. The findings provide valuable insights for decision-making in urban gas pipeline renewal.

Aging gas pipelines; Non-trench repair; Cost-effectiveness; Comparative analysis